Home / 11,154.82-15,393.65-6,439.10

Finding the Fourth Proportional to 11,154.82, 15,393.65 and 6,439.10

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Solution

The fourth proportional to 11,154.82, 15,393.65 and 6,439.10 is: 8,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.82 : 15,393.65 = 6,439.10 : x
  2. Step 2: Convert to fraction form
    11,154.82/15,393.65 = 6,439.10/x
  3. Step 3: Cross multiply
    11,154.82x = 15,393.65 × 6,439.10
  4. Step 4: Simplify right side
    11,154.82x = 99,121,251.72
  5. Step 5: Solve for x
    x = 99,121,251.72/11,154.82
  6. Step 6: Final answer
    x = 8,885.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.